The number 25494
25494 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 7 × 607. Divisors (16): 1, 2, 3, 6, 7, 14, 21, 42, 607, 1214, 1821, 3642, 4249, 8498, 12747, 25494.
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How to work it out
- 1
25494 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
25494 is composite. Its prime factorisation is
- 3
The divisors add up to 58368; without 25494 itself that is 32874, so 25494 is abundant (32874 is more than 25494). Euler's totient φ(25494) = 7272 numbers up to 25494 share no factor with it.
- 4
The digits of 25494 add up to 24, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 82 steps to reach 1.
LaTeX source of the formulas on this page
\[ 25494 = 2 \times 3 \times 7 \times 607 \]
25494 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 58368 |
| Euler totient φ(n) | 7272 |
| Square | 649944036 |
| Cube | 16569673253784 |
| Square root | 159.668406 |
| Digit sum / digital root | 24 / 6 |
| Collatz steps to 1 | 82 |
| Scientific notation | 2.5494 × |
25494 in other forms
| Form | Value |
|---|---|
| In words | twenty-five thousand four hundred and ninety-four |
| Binary (base 2) | 110001110010110 |
| Octal (base 8) | 61626 |
| Hexadecimal (base 16) | 6396 |
| Base 3 | 1021222020 |
| As time | 25494 seconds = 7 h 4 min 54 s |
Is 25494 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (25494 ÷ 2 = 12747) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (25494 ÷ 3 = 8498) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (25494 ÷ 6 = 4249) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | Yes (25494 ÷ 7 = 3642) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 4) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 25494 a prime number?
No. 25494 = 2 × 3 × 7 × 607, so it is divisible by 2.
What are the factors of 25494?
1, 2, 3, 6, 7, 14, 21, 42, 607, 1214, 1821, 3642, 4249, 8498, 12747, 25494.
What is 25494 in binary?
110001110010110 (hexadecimal 6396, octal 61626).
What is the square root of 25494?
About 159.6684.
Is 25494 divisible by 3?
Yes. Its digits add up to 24, a multiple of 3.
What is special about the number 25494?
It is a composite number with 16 divisors.